EP 0865955 A2 19980923 - On-demand four-wheel drive transmission with lock-out clutch
Title (en)
On-demand four-wheel drive transmission with lock-out clutch
Title (de)
Bedarfsabhängiges Vierradantriebssystem mit Sperrkupplung
Title (fr)
Système d'entraînement sur demande avec embrayage de verrouillage pour véhicules à quatre roues motrices
Publication
Application
Priority
- US 4128597 P 19970321
- US 1819298 A 19980204
- US 1819098 A 19980204
Abstract (en)
A transmission for a four-wheel drive vehicle having a multi-speed geartrain (42) and power transfer mechanism (44) incorporated into a common housing assembly (45). The multi-speed geartrain includes a input shaft (46), a mainshaft (48), and a plurality of constant-mesh gearsets arranged for selectively coupling the mainshaft (48) to the input shaft (46) for driven rotation at various speed ratios. The mainshaft (48) can be selectively coupled to the power transfer mechanism (44) for establishing two alternative power transmission routes. In particular, a range shift mechanism (58) is provided for establishing a high-range power transmission route and a low-range power transmission route from the mainshaft (48) to the input of an interaxle differential (60). The torque delivered to the interaxle differential (60) is split between the front (32) and rear (38) drivelines to establish a full-time four-wheel drive mode. As an option, a transfer clutch (200) is provided for automatically controlling slip and torque biasing between the outputs of the interaxle differential (60). A lock-out clutch (184) is provided for permitting the interaxle differential (60) to be locked for establishing a locked four-wheel drive mode. As a further option, a mode clutch can be provided for permitting one of the drivelines to be selectively disconnected from the transmission for establishing a two-wheel drive mode.
IPC 1-7
IPC 8 full level
B60K 17/346 (2006.01); B60K 17/35 (2006.01)
CPC (source: EP)
B60K 17/3467 (2013.01); B60K 17/3515 (2013.01)
Citation (applicant)
- GB 2035930 A 19800625 - BRITISH LEYLAND CARS LTD
- US 5456642 A 19951010 - FROST BARRY L [US]
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 0865955 A2 19980923; EP 0865955 A3 19981104; EP 0865955 B1 20011128; AT E209580 T1 20011215; CA 2232766 A1 19980921; DE 69802598 D1 20020110; DE 69802598 T2 20020725
DOCDB simple family (application)
EP 98105135 A 19980320; AT 98105135 T 19980320; CA 2232766 A 19980320; DE 69802598 T 19980320